<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="app">
        <input type="text" v-model="message" @keyup.enter="getm">
        <h2>{{message}}</h2>
        <button @click="btn">点击修改</button>
    </div>
    <script src="../node_modules/vue/dist/vue.js"></script>
    <script>
        var app = new Vue({
            el: '#app',
            data: {
                message: '凌梓超'
            },
            methods: {
                getm: function() {
                    alert(this.message)
                },
                btn: function() {
                    this.message = "覃小玲"
                }
            }
        })
    </script>
</body>

</html>